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2003 Course Audio - Video Engineering

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Total No. of Questions : 12] P1157 [Total No. of Pages : 3 [3864] - 276 B.E. (E & TC) AUDIO - VIDEO ENGINEERING (2003 Course) Time : 3 Hours] [Max. Marks : 100 Instructions to the candidates: 1) Answer three questions from section I and three questions from section II. 2) Answers to the two sections should be written in separate books. 3) Neat diagrams must be drawn wherever necessary. 4) Figures to the right indicate full marks. 5) Use of logarithmic tables, slide rule, Mollier charts, electronic pocket calculator and steam tables is allowed. 6) Assume suitable data, if necessary. SECTION - I Q1) a) Explain with suitable expressions, why (G-Y) signal is not transmitted in colour T.V. transmission? [4] b) Compare the technologies suitable for flat panel display used for colour T.V. [8] c) Define the terms: [6] i) Hue ii) Kell factor iii) Saturation iv) Colour Temperature OR Q2) a) Draw the complete colourplexed composite video signal received in colour T.V., indicating level & timings of different component of signal. Explain [8] the purpose of different components. b) What are the compatibility requirements for colour T.V. transmission? Explain the concept of frequency interleaving. [8] c) State why VSB modulation is used in T.V.? [2] P.T.O. Q3) a) Explain the working of PAL Encoder with necessary block schematic & also explain the cancellation of phase errors with colour circle & phasor diagrams. [8] b) Explain the working of T.V. pattern generator with necessary block schematic. State the use of different patterns. [8] OR Q4) a) Describe giving block diagram, the working of IF Modulation T.V. Transmitter. State its advantages over High level Modulation T.V. [8] Transmitter. b) State the procedure followed in fault finding of T.V. receiver. What is the likely fault or faulty stage in a T.V. indicated by following symptoms? i) Height compressed ii) Width compressed iii) Picture snowy iv) Tilted raster [8] Q5) a) State the difference between component coding & composite codingspecify the important parameters for digitized video signal. [8] b) Discuss the different uncompressed & compressed Digital Video Tape Recording formats. [8] Q6) a) b) c) d) OR Explain the General format for MAC signal for transmitting colour T.V signals. State different types of MAC signals. [8] What are the technical advantages of using digital technology in television systems? [3] Compare in brief Interlace & progressive scanning used in Digital T.V.[2] State the data transmission rate & compression ratio for different video compression MPEG formats. [3] SECTION - II Q7) a) b) Discuss the HDTV standards & typical parameters for HDTV. transmission. State compatibility problems in HDTV. Why progressive scanning is preffered in HDTV? [10] Draw the block diagram of CATV system & explain its operation. [8] OR [3864]-276 2 Q8) a) b) c) Q9) a) b) Q10)a) b) Q11)a) b) Q12)a) b) Write short notes (Any two): [10] i) CCTV. ii) Set top box used in DTH. TV. iii) T.V. coverage plan for Marathon. Explain in brief the term Video on Demand . [4] State ATSC picture display formats in tabular form for HDTV, SDTV & EDTV, indicating different parameters. [4] State the typical specifications/parameters of Compact Disc (CD) & state its advantages on traditional recording systems. What is the difference between CD & DVD? [8] Draw a block diagram for magnetic recording & reproduction system. Describe function of each block. [8] OR Discuss in brief MP3 audio compression format used, indicating different specifications/parameters used. State principles & techniques used for compression. [8] Explain with necessary block schematic, how sound is reproduced from compact disc? [8] Write short notes on (Any two): [10] i) Speakers for cell phones. ii) PA system for Auditorium. iii) Acoustic chamber. State the following for chordless microphone PA system. [6] i) Typical microphone used & its specifications. ii) Type of RF modulation used, range of frequencies, distance of communication. iii) Areas of application. OR State the necessity of reverberation, typical reverberation periods & factors on which reverberation time depends. [8] State the advantages for satellite Radio. Draw the block diagram for satellite Radio uplink system & explain how audio is fed into satellite for world wide Radio reception. [8] jjj [3864]-276 3

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